a,b,c = map(float,input().split())
d = b*b - 4*a*c

if d<0:
    print("No answer!")
elif d==0:
    x = -b/(2*a)
    print("x1=x2=%.5f" %x)
else:
    x1 = (-b+d**0.5)/(2*a)
    x2 = (-b-d**0.5)/(2*a)
    if x1>x2:
        x1,x2 = x2,x1
    print("x1=%.5f;x2=%.5f" %(x1,x2))